Volunteers harvest Ston salt from historic Croatian site

A worker pushes a wagon full of salt at the Ston Saltworks site in Ston, south Croatia on July 31.

The Ston Saltworks are the oldest and best preserved salt works from Mediterranean history, with production techniques dating back to the Republic of Dubrovnik in the Middle Ages. Salt at Ston is gathered by locals and volunteers every summer between July and September.

Antonio Bronic / Reuters

A worker collects salt at the Ston Saltworks site in Ston, south Croatia.

Antonio Bronic / Reuters

A worker collects salt at the Ston Saltworks site in Ston, south Croatia.

Antonio Bronic / Reuters

A wheel of a wagon full of salt is seen at the Ston Saltworks site in Ston, south Croatia.